1 //===- TernaryOp.cpp ------------------------------------------------------===// 2 // 3 // The MCLinker Project 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #include <mcld/Script/TernaryOp.h> 10 #include <mcld/Script/Operand.h> 11 #include <mcld/ADT/SizeTraits.h> 12 13 using namespace mcld; 14 //===----------------------------------------------------------------------===// 15 // TernaryOp 16 //===----------------------------------------------------------------------===// 17 template<> 18 IntOperand* 19 TernaryOp<Operator::TERNARY_IF>::eval(const Module& pModule, 20 const TargetLDBackend& pBackend) 21 { 22 IntOperand* res = result(); 23 if (m_pOperand[0]->value()) 24 res->setValue(m_pOperand[1]->value()); 25 else 26 res->setValue(m_pOperand[2]->value()); 27 return res; 28 } 29 30 /* DATA_SEGMENT_ALIGN(maxpagesize, commonpagesize) */ 31 template<> 32 IntOperand* 33 TernaryOp<Operator::DATA_SEGMENT_ALIGN>::eval(const Module& pModule, 34 const TargetLDBackend& pBackend) 35 { 36 /* This is equivalent to either 37 (ALIGN(maxpagesize) + (. & (maxpagesize - 1))) 38 or 39 (ALIGN(maxpagesize) + (. & (maxpagesize - commonpagesize))) 40 */ 41 IntOperand* res = result(); 42 uint64_t dot = m_pOperand[0]->value(); 43 uint64_t maxPageSize = m_pOperand[1]->value(); 44 uint64_t commonPageSize = m_pOperand[2]->value(); 45 uint64_t form1 = 0, form2 = 0; 46 47 alignAddress(dot, maxPageSize); 48 49 form1 = dot + (dot & (maxPageSize - 1)); 50 form2 = dot + (dot & (maxPageSize - commonPageSize)); 51 52 if (form1 <= form2) 53 res->setValue(form1); 54 else 55 res->setValue(form2); 56 return res; 57 } 58 59
